variable types

[deviant]

my program

//cents

#include <iostream>
 using std::cout;
 using std::cin;
 using std::endl;
#include <conio.h>

int main ()
{
    
    double a, b , c, d, e; 
    double total;
    
    total = (.50*a) + (.20*b) + (.10*c) + (.05*d) + (.01*e); 
    
    cout<<"\tFifty cents? "; 
    cin>> a,
    cout<<"\n\tTwenty cents? "; 
    cin>> b,
    cout<<"\n\tTen cents? ";
    cin>> c,
    cout<<"\n\tFive cents? "; 
    cin>> d,
    cout<<"\n\tOne cents? "; 
    cin>> e,
    cout<<"\n\tYour Total is: Php " << total << endl;
 
    
    getch();
    return 0;
}

result:
        Fifty cents? 3

        Twenty cents? 2

        Ten cents? 1

        Five cents? 2

        One cents? 3

        Your Total is: Php 4.51831e-303

i dont understand why the printed total is different when in fact
if you would just calculate using the given variables the answer
would only be 2.13

[QWERTYman]

do the declaration normally, but initialize it AFTERcin >> e;, perhaps.

If not that, then sorry.

[mikeb570]

The compiler reads from top to bottom. So in line 15, variables a, b, c, d, and e aren't set to any values. It doesn't remember that total = blah blah blah when you tell it to display the total. Put line 15 after cin >> e; like QWERTYman said, when a, b, c, d and e have values.

[deviant]

thanks a lot.. now my program is all alright..